Re: PFC unbelievable!

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "S & J Young by way of Terry Fritz <twftesla-at-qwest-dot-net>" <youngs-at-konnections-dot-net>

Rick,

Just curious why you didn't put the PFCs across the NST primary so the
current through the variac was also reduced?  You might need a different
value of PFC as the reactance will be different.
--Steve
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, November 10, 2001 12:01 PM
Subject: PFC unbelievable!


> Original poster: "Rick Williams by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <richardwwilliams-at-earthlink-dot-net>
>
> Hi List,
>
> Got some 12uF 240v run caps from
<http://www.usamfg-dot-net/>http://www.usamfg-dot-net/
> for 50 cents each. ( #71932 )
>
> Found out 8 of them were optimum, 96uF for one 15/30 NST and a Staco 25amp
> variac.
>
> Current was measured from the wall plug using an AC ammeter.
> NST output voltage was measured by a high voltage voltmeter (0-40kv).
>
> With the variac set to maximum without the PFC current was 4.25 amps, with
PFC
> it dropped to 0.7 amps, 700ma !!!!
>
> With the variac set to MINIMUM the current measured 4.20 amps with the
PFC.
> Makes sense.
>
> NST output current behaved the same with or without the PFC varying
smoothly
> with the variac.
>
> The schematic:
>
>
<http://potluck45.homestead-dot-com/files/PFCcaps01.jpg>http://potluck45.homest
> ead-dot-com/files/PFCcaps01.jpg
>
>
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